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Suncoast Audio Direct

Parasound Halo A21+

$4,199.00

Description
The Parasound Halo A 21+ power amplifier features high-quality and proven class A/AB technology, resulting in a durable and superior audio component that has been built to meet strict quality and performance standards. Experience exceptional audio and long-lasting reliability with the A 21+. Key Features: 300 watts x 2 @ 8 Ω RMS, both channels driven Circuitry designed by legendary John Curl High bias Class A/AB operation 60 amperes peak current per channel Stable with speaker impedance dips to 1.5 Ω Balanced inputs with discrete circuits CHK Infinium, custom 5-way speaker binding posts, Gold Plated RCA inputs Direct-coupled signal path, no capacitors or inductors Changes from the original A 21→A 21+: 250 → 300 Watts (8Ω) 400 → 500 Watts (4Ω) 750 → 1000 Watts (bridged) Filter cap: 88,000 uF → 108,000 uF S/N: 112dB → 115 dB THD (at full power): 0.2% → 0.1% Crosstalk (20kHz): 63dB → 70dB Transformer size: 1.2 kVA → 1.3 kVA Weight: 60 LB → 71 LB Refined Halo cosmetic with aluminum end caps & gold highlights Updated rear panel with heavy duty speaker terminals from JC 5 Upgraded internal gold on gold audio connections Updated auto turn on circuit
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Power Output – Stereo Mode (0.1% THD)
300 watts x 2, 8 Ω both channels driven
500 watts x 2, 4 Ω both channels driven

Power Output – Bridged Mode (0.1% THD)
1000 watts x 1, 8 Ω
Bridged 4 Ω operation is not recommended

Power measurement are at 120 VAC:
0.1% THD, RMS continuous power,
full audio band (20 Hz - 20 kHz)

Current Capacity
60 amps peak, per channel

Slew Rate
> 130 volts per microsecond

Frequency Response
5 Hz - 100 kHz, +0/-3 dB
20 Hz - 20 kHz, +0/-0.25 dB

Total Harmonic Distortion (THD)
< 0.1 % at full power
< 0.03 % at typical listening levels

IM Distortion
< 0.04 %

TIM
Unmeasurable

Inter-channel Crosstalk
> 80 dB at 1 kHz
> 70 dB at 20 kHz

Input Impedance
Unbalanced: 33 kΩ
Balanced: 66 kΩ,(33 kΩ per leg)

Total Gain
29 dB

Input Sensitivity for 28.28 V Output into 8 Ω
Unbalanced: 1 V
Balanced: 1 V per leg

S/N Ratio
> 115 dB, input shorted, IHF A-weighted
> 110 dB, input shorted, unweighted

Damping Factor
> 1100 at 20 Hz

DC Trigger Requirements
+9 Vdc to +12 Vdc, 5 mA

Audio Trigger Requirements
2 mV - 10 mV

XLR Pin Identification
1 = Ground (Shield)
2 = Positive
3 = Negative (Return)

Dimensions
Width: 17-5/8" (448 mm)
Height without feet: 7-1/8" (181 mm)
Height with feet: 7-3/4" " (197 mm)
Depth: 20" (508 mm)
Depth with cables: 21-1/2" (546 mm)

Net Weight
71 lb. (32.2 kg)

Shipping Weight
88 lb. (39.9 kg)

Power Requirement
Standby: 1 Watt
Idle (no music playing): 160 Watts
Typical Listening levels: 300 Watts
Maximum: 1400 Watts

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Suncoast Audio Direct

Parasound Halo A21+

From $3,599.00

The Parasound Halo A 21+ power amplifier features high-quality and proven class A/AB technology, resulting in a durable and superior audio component that has been built to meet strict quality and performance standards. Experience exceptional audio and long-lasting reliability with the A 21+.

Key Features:

Changes from the original A 21→A 21+:

  • 250 → 300 Watts (8Ω)

  • 400 → 500 Watts (4Ω)

  • 750 → 1000 Watts (bridged)

  • Filter cap: 88,000 uF → 108,000 uF

  • S/N: 112dB → 115 dB

  • THD (at full power): 0.2% → 0.1%

  • Crosstalk (20kHz): 63dB → 70dB

  • Transformer size: 1.2 kVA → 1.3 kVA

  • Weight: 60 LB → 71 LB

  • Refined Halo cosmetic with aluminum end caps & gold highlights

  • Updated rear panel with heavy duty speaker terminals from JC 5

  • Upgraded internal gold on gold audio connections

  • Updated auto turn on circuit

Color

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